View all registry entries with FlipFlopWheel

Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID**\Device` Parameters FlipFlopWheel -EA 0

Change the registry settings for each entry with FlipFlopWheel

Reverse mouse wheel scroll FlipFlopWheel = 1

Normal mouse wheel scroll FlipFlopWheel = 0

Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID**\Device` Parameters FlipFlopWheel -EA 0 | ForEach-Object { Set-ItemProperty $_.PSPath FlipFlopWheel 1 }